Right now, building costs in Perth start at around $1,250 a square metre for a single storey brick and tile project homes of medium finish. But, figures can vary greatly depending on a many things.

Individually designed Contract built homes are generally more expensive, and some upward allowance should be made in these situations.

If you live outside Perth, remember that building costs are higher in regional areas. For example, in the South West, you can add 5-10 per cent to Perth building costs and in the North West, construction costs can increase by as much as 50%.

For two storey construction, upper floor areas should be valued at around twice the construction cost of single storey building work.

A modest slope on your block can add about 10% to your cost; a steep block might add 20%.

There are many more questions you may have, so check out Master Builders A to Z at their website, mbawa.com. Or to see display homes on-line check out displayhomeswa.com.au